Thank you for your question. The pop-up drain assemblies are not designed to hold water for long periods of time. If the water is leaking out of the sink bowl right away, then the water may actually be leaking around the flange and running down the drain. If you push down on the stopper with water in the sink bowl and the water still leaks out of the bowl, then the flange is not sealed properly. I would suggest removing the flange from the sink bowl and applying a large bead of clear silicon to the bottom side of the flange to properly seal the flange with your sink bowl before you reinstall it.
Date published: 2017-10-01